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RE: Multi-story wood framed w/lots of openings[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: <seaint(--nospam--at)seaint.org>
- Subject: RE: Multi-story wood framed w/lots of openings
- From: "Eli Grassley" <elig(--nospam--at)psm-engineers.com>
- Date: Thu, 10 Mar 2005 10:57:03 -0800
I definitely agree. You have to add something like a MST48 at the ends of the wall section across the floor framing gap. The strap would need to be nailed to the same vertical studs that the foundation holdown is connected to also. Nails in withdrawal in place of a holdown strap is a joke. I think that detail is meant to show a shear load path, not uplift – I hope.
~~ Eli Grassley
I just looked at the AF&PA perforated shearwall document. The top detail of Figure 5 on page 8 relies on nails in withdrawal to resist uplift. I don’t agree with this. Anyone else? It would be easy enough to strap this joint, however, as shown in the other connection in this detail.
Bob Garner, S.E.
From: chuck utzman
There is a great technical guide from the AF&PA written by Jeffrey Stone, PhD that covers perforated shear walls a little more in depth than the IBC does. With lots of wall openings you should definitely think about using a perforated analysis with holdowns only at the extreme ends of the wall. Check it out:
I have noted with interest the discussion regarding the Simpson tie-downs and framing.
I am just starting to look at a two story wood building with a huge number of windows. Leaves little solid wall.
Anyone have any comments or ideas on where to get examples of such a perforated design?
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